TF4™
Four-file hybrid sequence (T20 20/.07, T25 25/.07, T35 35/.06, T45 45/.05) where T25 25/.07 is run in reciprocating motion within an otherwise rotary workflow at 350 rpm / 2.0–3.0 N·cm (per IFU spec table and step-by-step)
| File | Tip | Taper | Speed rpm | Torque Ncm |
|---|---|---|---|---|
| T20 20/.07 | 0.20 | 7% | 350 (IFU step 7 names T20 as the resistance substitute for T25's reciprocating step — motion type for this substitution is ambiguous in the IFU) | 2.0-3.0 |
| T25 25/.07 (reciprocating) | 0.25 | 7% | Reciprocating motor setting (per IFU) | 2.0-3.0 |
| T35 35/.06 | 0.35 | 6% | 350 | 2.0-3.0 |
| T45 45/.05 | 0.45 | 5% | 350 | 2.0-3.0 |
Brochure-style IFU (File No. TF4-SM-001 family) — TF4 has its own IFU body with step-by-step instructions
Verified spec table: T20 20/.07, T25 25/.07, T35 35/.06, T45 45/.05 — all at 350 rpm and 2.0–3.0 N·cm (per IFU spec table)
Hybrid kinematics: IFU step 5 explicitly places T25 25/.07 in reciprocating motion; IFU step 7 lists T20 (resistance) and T35/T45 (loose canal) as substitutes for T25 — the motion type for these substitutes is not explicitly stated, but is implied to inherit T25's reciprocating step
Switch logic is explicitly defined: tighten → T20, loosen → T35/T45 (per IFU step 7)
The .07 tapers in T20/T25 are aggressive — verify motor torque headroom and avoid binding (general guidance)
Obturation Techniques
Single cone, warm vertical, carrier-based & lateral compaction
From Perfect Dental Systems
Manufacturer page
Perfect Dental SystemsOther continuous rotation systems
Motion category
Continuous RotationComparisons
Clinical guides